PHP: mssql driver for PDO
You do not need to use the PECL PDO_DBLIB package.
Debian 7
Package php5-sybase 5.4.36-0+deb7u3
See https://packages.debian.org/wheezy/amd64/php5-sybase/filelist
Redhat 6
Package php-mssql-5.3.3-3.el6.x86_64
UTF-8 support
/etc/freetds/freetds.conf:
# add UTF-8 support tds version = 7.0
